SN4 ""

No	Pattern	Freq
1	[verb] a threat to	161
2	[prep] a threat to	152
3	[prep] a threat to	152
4	as a threat to	113
5	as a threat to	113
6	be a threat to	95
7	[be] a threat to	95
8	pose a threat to	88
9	[vb past] a threat to	46
10	[be] a threat to	37
11	be a threat to	37
12	[adv] a threat to	31
13	[vb infin] a threat to	29
14	of a threat to	29
15	of a threat to	29
16	posed a threat to	25
17	[conj] a threat to	25
18	[vb -s] a threat to	24
19	[adv] a threat to	23
20	[vb base] a threat to	21
21	[was/were] a threat to	20
22	pose a threat to	19
23	[is] a threat to	18
24	[to-vb] a threat to	18
25	[adj] a threat to	17
26	is a threat to	16
27	[coord] a threat to	16
28	represent a threat to	14
29	was a threat to	14
30	[v-ing] a threat to	14